"
" Syntax file for the Happy parser generator
" <http://haskell.org/happy>
"

syn include @Haskell syntax/haskell.vim
set isk-='
syn region happyHsSnippet matchgroup=happyDelim start="{%\?" end="}" contains=@Haskell,happySplice,happySpliceEscape,happyHsBraces
" needed for the same reason as alex.vim
syn region happyHsBraces matchgroup=hsDelimiter start="{" end="}" contains=@Haskell,happyHsBrace contained
syn region happyString start="\k\@<!'" end="'"
syn match happyNumber "\<\d\+\>"
syn match happyPrimeErr "\k\zs'\+"
syn match happySplice "\\\@<!\$\([\$>]\|\d\+\)" contained
syn match happySpliceEscape "\\\ze\$" contained
syn match happyComment "--.*"

syn match happyDirError "%\K\k*\>" contains=happyDirName,happyDirPercent
syn match happyDirPercent "%" contained
syn keyword happyDirName contained tokentype token name partial monad lexer
syn keyword happyDirName contained left right nonassoc expect error
syn keyword happyDirName contained attributetype attribute

syn match happyDblPercent "^%%$"

syn match happyRuleName "\K\k*\ze\_s*:"
" :, ::, and |
syn match happyRuleOps "::\?\||"


hi def link happyDelim          Delimiter
hi def link happyString         String
hi def link happyNumber         Number
hi def link happyPrimeErr       Error
hi def link happySplice         Special
hi def link happySpliceEscape   Special
hi def link happyComment        Comment
hi def link happyDirError       Error
hi def link happyDirPercent     PreProc
hi def link happyDirName        PreProc
hi def link happyDblPercent     Special
hi def link happyRuleName       Structure
hi def link happyRuleOps        Keyword

set autoindent copyindent